2021 Specialized Sirrus 3.0 Step Through vs 2021 Giant Escape 2 Disc
The M is the Giant Escape 2 Disc size closest to your S Specialized Sirrus 3.0 Step Through. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Giant Escape 2 Disc
Compared with the Specialized Sirrus 3.0 Step Through in S, the Giant Escape 2 Disc in M places the top of the head tube 7 mm lower and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Sirrus 3.0 Step Through, SGiant Escape 2 Disc, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus 3.0 Step Through S | Giant Escape 2 Disc M | Difference |
|---|---|---|---|
| Reach | 400mm | 410 | +10 mm |
| Stack | 563mm | 556 | −7 mm |
| Head tube angle | 70° | 71.0° | +1.0° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Chainstay length | 440mm | 445 | +5 mm |
| Wheelbase | 1068mm | 1075 | +7 mm |
| Standover | 620mm | 754 | +134 mm |
| Seat tube length | 450mm | 485 | +35 mm |
| Fork length | 395mm | not listed | |
| Head tube length | 147mm | 130 | −17 mm |
| BB drop | not listed | 60 |
Differences are the Giant Escape 2 Disc minus the Specialized Sirrus 3.0 Step Through. Full charts: 2021 Specialized Sirrus 3.0 Step Through, 2021 Giant Escape 2 Disc.
Where each sits in its class
Specialized Sirrus 3.0 Step ThroughGiant Escape 2 Disc
Each bike is ranked against the other commuter bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Sirrus 3.0 Step Through3.0 Step Through | Giant Escape 2 DiscEscape 2 Disc |
|---|---|---|
| Derailleur | microSHIFT R9, Shimano Sora | microSHIFT R8, microSHIFT M26L |
| Cassette | Shimano Sora | microSHIFT CS-H081 |
| Chain | KMC X9 | KMC Z8.3 |
| Tire | Specialized RoadSport Reflect | Giant S-X2 |
| Brake | Tektro HD-R280 | Tektro HD-R280 |
| Saddle | Specialized Bridge Sport | Giant Sport |
| Frame | not listed | Giant ALUXX-Grade Aluminum |
| Fork | not listed | Giant alloy |
| Shifter | not listed | microSHIFT TS39 |
| Crankset | not listed | Prowheel forged alloy |
| Pedals | not listed | Giant Urban Fitness |
| Wheelset | not listed | Giant GX |
| Hub | not listed | Giant GX alloy |
| Rim | not listed | Giant Double-wall aluminum |
| Rotor | not listed | Giant MPH |
| Handlebar | not listed | Giant Sport XC |
| Stem | not listed | Giant Sport |
| Seatpost | not listed | Giant D-Fuse |
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